This container can be pulled via:
  docker pull registry.opensuse.org/isv/suse/edge/3.7/totest/images/3.7/kube-rbac-proxy:0.22.1
  docker pull registry.opensuse.org/isv/suse/edge/3.7/totest/images/3.7/kube-rbac-proxy:0.22.1-1.4

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.